Essay on cosmology

Astronomers struggle constantly to see objects that are ever dimmer and further away. Medicine struggles with similar issues: to see things that are obscured within the human body. Both disciplines require high-resolution, accurate and detailed images. Perhaps the most notable example of knowledge transfer between these two studies is the technique of aperture synthesis , developed by the radio astronomer and Nobel Laureate, Martin Ryle (Royal Swedish Academy of Sciences, 1974). This technology is used in computerised tomography (also known as CT or CAT scanners), magnetic resonance imaging (MRIs), positron emission tomography (PET) and many other medical imaging tools.

This is a passage from the story of the great world-wide flood of Noah. It seems to have been derived from an earlier Pagan Babylonian myth of a great flood . The cosmological view of the ancient Hebrews involved a vault or firmament over the earth which contained floodgates. The latter were doors that could be opened from above. Water could be poured through the doors down to the earth as rain or snow. The Babylonian flood myth may well have been based on memories of a a catastrophic deluge when a land bridge was breached and the Mediterranean Sea flooded what is now the Black Sea about 7,500 years ago.

In 1998, two independent teams of astrophysicists discovered a baffling phenomenon: the Universe is expanding at an ever-faster rate. The current understanding of gravity can't explain this cosmic acceleration. Scientists think that either a mysterious force called dark energy is to blame—or a reworking of gravitational theory is in order. Travel to the University of California's Lick Observatory to learn how astrophysicists use distant stellar explosions to observe the expansion of space. Then watch a team at Fermilab assemble the Dark Energy Camera, a new device researchers hope will find compelling evidence of what's propelling the Universe to expand at an increasing pace.

Printed publishing rights retained by the author, copyright pending. Internet publishing rights granted by the author to Christoffer Nilsson for use exclusively in Qrisse's Poe Pages. Any for-profit use of this material is expressly forbidden. Educational users and researchers must use proper documentation procedures, crediting both the publisher, Christoffer Nilsson and the author, David Grantz "What is now proved was once only imagined."

"The hours of folly are measur'd by the clock; but of wisdom, no clock can measure."

"No bird soars too high, if he soars with his own wings."

William Blake -- proverbs from The Marriage of Heaven and Hell

Essay on cosmology

essay on cosmology

Printed publishing rights retained by the author, copyright pending. Internet publishing rights granted by the author to Christoffer Nilsson for use exclusively in Qrisse's Poe Pages. Any for-profit use of this material is expressly forbidden. Educational users and researchers must use proper documentation procedures, crediting both the publisher, Christoffer Nilsson and the author, David Grantz "What is now proved was once only imagined."

"The hours of folly are measur'd by the clock; but of wisdom, no clock can measure."

"No bird soars too high, if he soars with his own wings."

William Blake -- proverbs from The Marriage of Heaven and Hell

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